CVE-2024-40039
📋 TL;DR
This CSRF vulnerability in idccms v1.35 allows attackers to trick authenticated administrators into performing unauthorized actions by visiting malicious web pages. Attackers can delete user groups without the admin's knowledge or consent. Only administrators with access to the vulnerable admin panel are affected.
💻 Affected Systems
- idccms
📦 What is this software?
Idccms by Idccms Project
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of CMS administration: attackers could delete all user groups, modify permissions, or perform other administrative actions leading to site disruption or privilege escalation.
Likely Case
Targeted deletion of specific user groups causing disruption to site functionality and user management capabilities.
If Mitigated
No impact if proper CSRF protections are implemented or if administrators don't visit malicious sites while authenticated.
🎯 Exploit Status
Exploitation requires the victim administrator to be authenticated and visit a malicious page. The exploit is simple HTML/JavaScript.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None known
Restart Required: No
Instructions:
No official patch available. Implement CSRF tokens in /admin/userGroup_deal.php and validate them on all state-changing operations.
🔧 Temporary Workarounds
Add CSRF Protection
allManually add CSRF token validation to the vulnerable endpoint
Edit /admin/userGroup_deal.php to include CSRF token generation and validation
Restrict Admin Access
allLimit admin panel access to specific IP addresses or networks
Add IP-based restrictions to .htaccess or web server configuration for /admin/ directory
🧯 If You Can't Patch
- Require re-authentication for sensitive administrative actions
- Implement SameSite cookies and Content Security Policy headers
🔍 How to Verify
Check if Vulnerable:
Check if /admin/userGroup_deal.php?mudi=del endpoint accepts POST requests without CSRF token validationCheck Version:
Check CMS version in admin panel or configuration filesVerify Fix Applied:
Test that the endpoint now requires and validates a CSRF token for deletion actions📡 Detection & Monitoring
Log Indicators:
- Multiple DELETE requests to /admin/userGroup_deal.php from same admin session
- User group deletions without corresponding admin UI interactions
Network Indicators:
- HTTP POST requests to vulnerable endpoint with Referer headers pointing to external domains
SIEM Query:
web_access_logs WHERE (uri_path LIKE '%/admin/userGroup_deal.php%' AND method='POST') AND (referer_domain NOT IN allowed_domains)